--- /dev/null
+/* ksign.h: in-kernel signature checker
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _LINUX_CRYPTO_KSIGN_H
+#define _LINUX_CRYPTO_KSIGN_H
+
+#include <linux/types.h>
+
+#ifdef CONFIG_CRYPTO_SIGNATURE
+extern int ksign_verify_signature(const char *sig, unsigned sig_size,
+ struct crypto_tfm *sha1);
+#endif
+
+#endif /* _LINUX_CRYPTO_KSIGN_H */